Predicting Strength Variability of Concrete Offshore Structures
Publication: Journal of Structural Engineering
Volume 120, Issue 7
Abstract
A method for predicting the sectional strength variability of complex concrete structures subjected to combined membrane forces, bending moments, and transverse shear is presented. SHELL474, which uses a three‐dimensional generalization of the modified compression field theory to predict the theoretical capacity of complex concrete elements, is incorporated within the reliability‐analysis model RELAN, in order to evaluate the function defining the failure limit state. The method is used in an example where the strength variability of the 1.4‐m‐thick ice wall of the Hibernia concrete offshore structure (1986 updated design) is studied. Statistical models for the 15 random variables that affect the resistance of the structural concrete wall were determined from the literature. The analysis results illustrate the importance of obtaining updated statistical information on modern high‐performance concrete, for both the compressive and tensile‐strength distributions.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Adebar, P. (1989). “Shear design of concrete offshore structures,” PhD thesis, University of Toronto, Toronto, Ontario, Canada.
2.
Adebar, P., and Collins, M. P. (1994). “Shear design of concrete offshore structures.” ACI Struct. J., 91(2).
3.
Allyn, N., Yee, S., and Adebar, P. (1992). “A verification study of the new Canadian standard for concrete offshore structures.” Proc. 11th Int. Offshore Mech. and Arctic Engrg. Conf., V. IV, Arctic/Polar Tech., June, 35–49.
4.
Bea, R. G. (1991). “Loading and load effects uncertainties.” Project No. D‐3 Report, Canadian Standards Association, Rexdale, Ontario, Canada.
5.
Bucher, C. G., and Bourgund, U. (1990). “A fast and efficient response surface approach for structural reliability problems.” Struct. Saf., 7, 57–66.
6.
Collins, M. P., Adebar, P., and Kirschner, U. (1989). “SHELL474—a program to determine the sectional resistance of concrete offshore structures in accordance with CSA Standard S474‐M1989.” Verification Project No. E‐2 Report, Canadian Standards Association.
7.
“Code for the design, construction and installation of fixed offshore production structures, part 4—S474 concrete structures.” (1989). CSA Standard S474, Canadian Standards Association, Rexdale, Ontario Canada.
8.
Det norske Veritas (Canada) Ltd. (1988). “Probabilistic framework for ice loads on fixed marine structures.” Final Report to The Department of Public Works Canada, Det norske Veritas (Canada) Ltd.
9.
Ellers, F. S. (1982). “Advanced offshore oil platforms.” Sci. Am., 246(4), 39–50.
10.
Foschi, R. O., and Folz, B. (1990). “RELAN: RELiability ANalysis.” User's manual, Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia, Canada.
11.
Jakobsen, B. (1992). “The loss of the Sleipner A platform.” Proc. Second Int. Offshore and Polar Engrg. Conf., San Francisco, Calif.
12.
Kirschner, U., and Collins, M. P. (1986). “Investigating the behavior of reinforced concrete shell elements.” Publication No. 86‐9, Department of Civil Engineering, University of Toronto, Toronto, Ontario, Canada.
13.
MacGregor, J. G. (1976). “Safety and limit states design for reinforced concrete.” Can. J. Civ. Engrg., 3, 484–513.
14.
Madsen, H. O., Krenk, S., and Lind, N. C. (1986). Methods of structural safety. Prentice‐Hall, Englewood Cliffs, N.J.
15.
Mirza, S. A., Kikuchi, D. K., and MacGregor, J. G. (1980). “Flexural strength reduction factor for bonded prestressed concrete beams.” ACI J., 77(4), 237–246.
16.
Mirza, S. A., and MacGregor, J. G. (1979a). “Variability of mechanical properties of reinforcing bars.” J. Struct. Div., ASCE, 105(5), 921–937.
17.
Mirza, S. A., and MacGregor, J. G. (1979b). “Variations in dimensions of reinforced concrete members.” J Struct. Div., ASCE, 105(4), 751–766.
18.
Olufsen, A., and Bea, R. G. (1990). “Uncertainties in extreme wave loadings on fixed offshore platforms.” Proc. Ninth Int. Conf. Offshore Mech. and Arctic Engrg., American Society of Mechanical Engineering, New York, N.Y.
19.
Vecchio, F., and Collins, M. P. (1986). “Modified compression field theory for reinforced concrete elements subjected to shear.” ACI J., 83(2), 219–231.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 7 • July 1994
Pages: 2108 - 2122
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jul 27, 1993
Published online: Jul 1, 1994
Published in print: Jul 1994
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.